test equipment repair forum here so I will post this video here.
This video addresses the modulation percent error. When the unit is powered on the meter pegs to the left. This is caused by a defected quad op-amp IC3 located on the front panel. The op-amp is a CA324. Pin 5 is input, pin 6 is control and 7 is output to the meter.
In this video we will trouble shoot the issue and repair the problem.
This video is the actual repair and is not staged, total repair time was 45 minutes by video was edited to stay in YCT 10 minute time.
This video addresses the modulation percent error. When the unit is powered on the meter pegs to the left. This is caused by a defected quad op-amp IC3 located on the front panel. The op-amp is a CA324. Pin 5 is input, pin 6 is control and 7 is output to the meter.
In this video we will trouble shoot the issue and repair the problem.
This video is the actual repair and is not staged, total repair time was 45 minutes by video was edited to stay in YCT 10 minute time.